CLICK ON MY AUTHOR NAME FOR MORE SUDOKU PUZZLE BOOKS! Improve your Brainpower with hard yet fun Sudoku games! Many games exist in this world that forces players to use their minds, testing their logic and skill, and Sudoku is one of them. Sudoku is a mentally enriching game that has been played for generations. It invokes logic and reasoning into the player making the more aware in recognizing patterns and solving problems. Benefits of this book: Our skill levels are accurate (Under puzzles you can see a difficult value). - Plenty of puzzles: 400 medium sudoku puzzles. - There are 4 puzzles per page : it will be easy for your eyes. - Solutions are at the end of the book. Don't wait any longer! Scroll up and click the buy now button